The 1986 Toyota 4Runner features a rugged manual transmission system designed for off-road capability and reliable performance. This 5-speed manual transmission is paired with the 2.4L 22R-E engine, providing smooth shifting and durable operation. Below are key sections covering specifications, operation, maintenance, troubleshooting, and service procedures for the manual transmission system.
The 1986 Toyota 4Runner is equipped with a 5-speed manual transmission (model G52) designed for durability and off-road performance.
| Specification | Details |
|---|---|
| Transmission Model | G52 5-speed manual |
| Gear Ratios | 1st: 3.93, 2nd: 2.33, 3rd: 1.45, 4th: 1.00, 5th: 0.85, Reverse: 4.84 |
| Fluid Capacity | 2.2 quarts (2.1 liters) GL-4 or GL-5 75W-90 gear oil |
| Clutch Type | Single dry plate, diaphragm spring |
| Synchromesh | All forward gears |
| Transfer Case | Part-time 4WD with 2-speed transfer case |
| Drivetrain | Rear-wheel drive with optional 4WD engagement |
Understanding the gear ratios and proper shifting techniques for optimal performance.
WARNING! Always come to complete stop before engaging 4WD. Do not force gears.
The clutch system provides smooth engagement between engine and transmission.
| Component | Specification |
|---|---|
| Clutch Disc Diameter | 225mm |
| Clutch Type | Hydraulic actuation |
| Master Cylinder | 3/4 inch bore |
| Slave Cylinder | 7/8 inch bore |
| Fluid Type | DOT 3 brake fluid |
| Pedal Free Play | 0.2-0.6 inches (5-15mm) |
CAUTION! Proper clutch adjustment is essential for transmission longevity.
Proper fluid maintenance is critical for transmission performance and longevity.
Standard H-pattern shift layout with 4WD engagement controls.
Shift Pattern: R 2 4 | | | | 1 | 3 | 5
4WD Controls: Floor-mounted transfer case shifter - 2H: Two-wheel drive high range - 4H: Four-wheel drive high range - N: Neutral - 4L: Four-wheel drive low range
WARNING! Engage 4WD only on slippery surfaces to avoid drivetrain damage.
Regular maintenance ensures optimal transmission performance.
| Service | Interval | Procedure |
|---|---|---|
| Fluid Check | Every 3,000 miles | Inspect level and condition |
| Fluid Change | 30,000 miles | Drain and refill with new gear oil |
| Clutch Adjustment | 15,000 miles | Check pedal free play |
| Linkage Inspection | 15,000 miles | Check shift linkage for wear |
| Mount Inspection | 30,000 miles | Check transmission mounts |
Typical problems encountered with the 1986 4Runner manual transmission.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Hard shifting | Low fluid, worn clutch | Check fluid level, adjust clutch, inspect linkage |
| Gear grinding | Worn synchronizers | Replace synchronizers, check fluid condition |
| Transmission noise | Low fluid, worn bearings | Refill fluid, inspect bearings for wear |
| Fluid leaks | Worn seals, cracked case | Replace seals, repair case damage |
| Won't stay in gear | Worn detents, shift forks | Inspect and replace worn components |
Basic service procedures for transmission maintenance.
CAUTION! Use jack stands when working under vehicle. Wear safety glasses.
Original warranty coverage and service support information.
Original Warranty: 12 months/12,000 miles from date of purchase. Coverage includes defects in materials and workmanship. Normal wear items excluded.
Service Support: Contact Toyota Customer Experience Center at 1-800-331-4331 or visit www.toyota.com for technical support and service bulletins.
Parts Availability: Genuine Toyota parts available through authorized dealers nationwide.